Developing Learning-Based Problem-Based Learning to Improve Problem Solving of Students in Grade VIII

This research aims to develop Problem based learning media to improve the mathematical problemsolving abilities of students. The Learning media developed in this research in the form of RPP and LKPD. This research used to research and development (R & D) method by following Plomp Model which begin with the preliminary research phase, development phase, and assessment phase. Need analysis, curriculum analysis, students analysis related to the problems in learning were done in the preliminary phase. In the development or prototype making is done Lesson Plane Design and LKPD of Problem based learning, then selfevaluation was conducted. Which discussed with the supervisor Mathematics learning media is them validated by five experts where three experts from the mathematics field, one from Education technology and one form linguist until the learning media is said valid and can be tasted. The subject of this research is eighthgrade students of SMPN 2 Pariaman where three students in one to one, eight students in a small group, and twenty-seven students in the field test. In the assessment phase, practical and effective tests were done limitedly. The practicality data is obtained from the implementation sheet of lesson plans, a questionnaire of teacher and students. The Effectiveness data is obtained from the students' learning result in the form of the final test to see students' problem-solving abilities. The result of the research will produce a valid, practical and effective mathematics learning media to improve Eighthgrade students' problem-solving abilities. Keywords— Problem-based Learning, Problem Solving,